ncm A2: 音频输出迁移 meow_audiod（SINK_AUDIOD 默认后端）— 修无声根因

- audio_out.c: 新增 SINK_AUDIOD 默认（SDK meow_audio_* 连 audiod）；NCM_AUDIO_SINK=file/null/alsa 与 MEOW_AUDIO_DIRECT=1 保留调试后端；ALSA 保底修两大坑（hw_params 全放行初始化 + mask 清零再单点）——旧 memset0 interval=「只能取0」→ HW_PARAMS 恒 EINVAL 即播放无声根因 - 新增 audio_out_pause：PAUSED 沿向 audiod 发 pause（停时钟不丢流）；resume 流死自动重开 - player_manager: 注册 meow_audio_on_preempt → g_play 命令通道暂停；播放事件全量 meow_log （open 参数/grant_*/write 错误节流/切歌/暂停/seek/done） - appstate/app: /tmp/ncm_autoplay 真机联调 hook（仅播已缓存曲目，绝不发 song_url） - bench/audiod_chain_sim.c: 真实 audiod_host 假 socket 全链离线回归 14 项全 PASS - 验证: host 0 warning / WAV 回归 / qemu core PASS / mipsel 0 warning；真机 OPEN→grant 已通，持续写帧被 M2.90 设备 PCM 播放内核硬挂死阻断（REPORT §16.3，4/4 复现，留主会话） - ncm md5 db5b78ad9e8f40e6306484efe2a08eb3（已热更设备）
2026-09-01 01:17:21 +08:00
1 parent 9bbc3a1467
commit e0136213fe
@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>

 #define NCM_DEFAULT_DATA "/usr/data/mnt/sd_0/MeowData/dev.player.ncm/data"

@@ -205,3 +206,89 @@ int appstate_current_playing(void)
    if (g_st.playing_song < 0 || g_st.playing_song >= g_st.song_count) return -1;
    return g_st.playing_song;
 }
+
+/* ---- 真机联调 autoplay hook（A2 音频迁移验收用，非正式能力）----
+ * 触发文件 /tmp/ncm_autoplay 存在且 home 歌单已载 → 后台线程找「已缓存」曲目并播放：
+ *   - 内容为纯数字 → 从该歌单下标起扫最多 AUTOPLAY_SCAN_PL 个歌单首页；
+ *   - 内容为其它文本 → 按歌单名子串匹配**单个**歌单（如 "Docu"；避开超大歌单的
+ *     全量 trackIds 解析，真机联调省时省内存）；
+ *   - 空文件 → 从 0 起扫。
+ * 风控纪律：**绝不发 song_url 下载**——无缓存命中只记日志退出；metadata 请求 = 每歌单
+ * 1 detail + 1 song_detail（≤ 2×AUTOPLAY_SCAN_PL 次）。 */
+#define AUTOPLAY_TRIGGER "/tmp/ncm_autoplay"
+#define AUTOPLAY_SCAN_PL 3
+
+/* 播放单个歌单首页中第一首已缓存曲目。命中播放返回 1，否则 0。 */
+static int autoplay_try_playlist(int pl)
+{
+    int rc = appstate_load_playlist_songs_page(pl, 0, NCM_SONG_BATCH);
+    if (rc != NCM_OK) {
+        meow_log(MEOW_LOG_WARN, "autoplay: playlist[%d] load rc=%d", pl, rc);
+        return 0;
+    }
+    char cpath[600];
+    for (int i = 0; i < g_st.song_count; i++) {
+        if (ncm_cache_lookup(&g_st.ctx.cache, g_st.songs[i].id, ".mp3",
+                             cpath, sizeof cpath) == NCM_OK) {
+            g_st.active_playlist = pl;
+            meow_log(MEOW_LOG_INFO, "autoplay: playlist[%d] song[%d] id=%s cached -> play",
+                     pl, i, g_st.songs[i].id);
+            player_manager_play(i);
+            return 1;
+        }
+    }
+    meow_log(MEOW_LOG_INFO, "autoplay: playlist[%d] first page %d songs, no cached track",
+             pl, g_st.song_count);
+    return 0;
+}
+
+static void *autoplay_worker(void *arg)
+{
+    const char *sel = (const char *)arg;     /* NULL=从 0 起扫；数字=起始下标；其它=歌单名子串 */
+    if (sel && sel[0] && !(sel[0] >= '0' && sel[0] <= '9')) {
+        for (int pl = 0; pl < g_st.playlist_count && !g_app_quit; pl++) {
+            if (strstr(g_st.playlists[pl].name, sel)) {
+                meow_log(MEOW_LOG_INFO, "autoplay: name '%s' -> playlist[%d] '%s' (%d tracks)",
+                         sel, pl, g_st.playlists[pl].name, g_st.playlists[pl].track_count);
+                if (autoplay_try_playlist(pl)) { free((void *)sel); return NULL; }
+                break;
+            }
+        }
+        meow_log(MEOW_LOG_WARN, "autoplay: no playlist name match / no cached track ('%s')", sel);
+        free((void *)sel);
+        return NULL;
+    }
+    int start = (sel && sel[0]) ? atoi(sel) : 0;
+    free((void *)sel);
+    if (start < 0) start = 0;
+    int end = start + AUTOPLAY_SCAN_PL;
+    if (end > g_st.playlist_count) end = g_st.playlist_count;
+    for (int pl = start; pl < end && !g_app_quit; pl++)
+        if (autoplay_try_playlist(pl)) return NULL;
+    meow_log(MEOW_LOG_WARN, "autoplay: no cached track found (no download, risk control)");
+    return NULL;
+}
+
+void autoplay_maybe(void)
+{
+    static int s_fired = 0;
+    if (s_fired || g_app_quit) return;
+    if (access(AUTOPLAY_TRIGGER, F_OK) != 0) return;
+    if (!g_st.logged_in || g_st.playlist_count <= 0) return;   /* 等 home 歌单载完 */
+    s_fired = 1;
+    char buf[64] = "";
+    FILE *f = fopen(AUTOPLAY_TRIGGER, "r");                    /* 一次性：读完即删 */
+    if (f) {
+        if (fgets(buf, sizeof buf, f)) {
+            size_t n = strlen(buf);
+            while (n && (buf[n - 1] == '\n' || buf[n - 1] == '\r' || buf[n - 1] == ' ')) buf[--n] = 0;
+        }
+        fclose(f);
+    }
+    unlink(AUTOPLAY_TRIGGER);
+    meow_log(MEOW_LOG_INFO, "autoplay: triggered, sel='%s'", buf);
+    char *sel = strdup(buf);
+    pthread_t t;
+    if (pthread_create(&t, NULL, autoplay_worker, sel) == 0) pthread_detach(t);
+    else free(sel);
+}